Saw-grinder.



E. H, SAW GENDER.

APPLICATION FILED was.

arme@ Jan, w, 1911.

1'; QHEETSSHEBT 1.

E. H. STERLNG.

SL W GRINDER,

APPLICATION FILED sEPT.22,1909.

Fatemed Jan. EG,

4 SHEETS*SHEJBT 2,

action of the grinder, the said governor loecombination of parts to be hereinafter more front shaft Ga, and hence said shaft (3a, is

of, means being provided forreciprocati-ng provide means for reciprocating the grinder view, the invention 'consists in the details `a beveled gear wheel 3, meshing with a gear -inorder that the said saw vmay rotate with UNITED STATES #In a i ATENT OFFICE.

EDGAR H. STERLING, OF BELLINGHAM, WASHINGTON SAW-GRINIQER.

To dll whom it may concern:

Be it known that I, EDGAR H. STERLING, aeitizen of the United States of America, and resident of Bellingham, in the county of Wrhatcoin and State of lilasliiiigton, have invented certain new and useful Improve ments in Saw-Grinders, of which the following is a specification.

This invention relates to saw grinding machines and it has for its object the provision'of novel means for rotating a saw -and simultaneously grinding the teeth therethe grinder simultaneously with its rotation. A; further object of this invention is to in order to carry the grinderfrom con-tact with-the saw upon interruption of the peration of the saw feeding mechanism.

A; still further object of this invention is to provide a .governor for controlling the ing made operative by variation in the speed of the saw feeding mechanism.

Vith the foregoing and other objects in of construction and -in the arrangement Aand fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this specification wherein like characters denote corresponding parts in the several views, in which- Figure 1, illustrates a plan view of a saw grinding machine embodying -the invention; Fig. 2, illustrates an elevation of one end thereof; Fig. 3, illustrates an end elevation of the opposite end;.Fig. 4, illustrates air elevation of one side of the grinder; Fig. 5, illustrates a transversesectional view on the line 5-'5 of Fig. l; Fig. 6, is a transverse sectional view on the line 6-6 of Fig. 1.

In these drawings 1, denotes a frame vhaving a power shaft 2. journaled thereon with wheel 4, on a shaft The shaft 5, hasa head or clamp G, designed to hold the saw the shaft 5. The shaft 5, is geared to the driven to communicate motion to an eccentric l 7 actuating the pi'tman 7, which pitnian is pivoted to a lever S, and the lever is ad- Specification of LettersPatent. Patented Jan, 10, 1911, Appiication ined september 22, 1909.

serial No. 518,909. Y

1Q, which bearings rest on a table 13 andthe table 13in tuin is slidable with relation lo the edge of the frame l, in order that the 11, is mounted, is journaled in the bearings` said table may be moved' toward or away A from the frame. The shaft 10. is movable longitudinally in order that. the grinding wheel 11, may be reciprocated with relation to the work rest ,14, and by work rest vismeant a. support for the saw, against which it is p 1essed, wlien the grindingwheel' 11, is inoperation. The outer end of the` shaft rod 16, and shaft 10,V are reeiprocated,I and A sinde ,the lever 8, takes motion from the pitman 7 and the pitman 7 is moved by the veccentric 7d fastened to the shaft 6a, which! takes motion from the shaft-5, it .follows that as the shaft 5, carries the saw which is to be operated on. by the grinder, the parts are .simultaneously operated from a single source of .power with the exception thatthe" shaft 10 is driven independently of the other mechanism through the medium of a pulley 17, which may he coupled to be driven in any suitable manner. i

A thrust rod 18. is slidable transversely of the frame 1 vand `has one end, projecting bethe 4frame. lW'hen therefore, the machine is operating under normal conditions the table is drawn toward the side of the frame by the -weigli't and -tlieA movement of the table ref sults in cariving the grinding surface of the wheel 1i. into Contact with the saw which is interposed between the periplicr)7 of the said .95 to draw the said table toward the side of wheel and the work rest 14. `lVhen, liowever, the speed of the machine is decreased below the normal I provide means for actuating tlie thrust rod 1S, in order that the table-may be carried away from the side of the frame andcanse a disengagement of the grinding wheel 11 and the saw.

justahly mounted on the pivot 9. The shaft 10, on which a. grinding wheel i The mechauisi'n for operating the thrust rod 1S, includes a governor 23, which has a I I, has operatedto move thelle've'r 27, for, as

- permitting the table 13, under the infiuence to the side of the frame as shown at '28, is swung on its pivot. A stub shaft- 29, proany other appropriate manner. The dlsk 30, 20

v3G, and as the lever 27, is raised, it operates and disk are released, the weight will, as

"long as the speed of the machineremains 'shaft to which the sawis clamped, a work belt 24., taking motion from the shaft 5 and the governor has a rod 26, connected-at or near its lower end to a lever 27,- so that as the goveijnor operates to move the rod longitudinally, the lever 27, which is hinged jects from the inner surface of the frame and has mount-ed thereon a segmental toothed disk 30, provided on its side with a cam 3l, designed to engage the anti-frictionl roller 32, on the end of the thrust rod 18. The segmental toothed disk 30` has attached to it by the brackets 33, a segmental rack 34;, the teeth of which are engaged by a. dog 35, taking motion from the lever 8. The teethv of the disk 30, are engaged by a detent 36, which is pivoted to the frame as at 37, or in is moved on the stub shaft by a weight. 3 0a in order to turn the disk in a direction to carry the cam 31 into engagement with the anti-friction roller 32, which movement results in moving the thrust rod" 18, longitudinally for the purpose -heretofore eX- plained. The operation just described takes place when the speed of the machine has decreased beyond the normal and the governor fully shown, the lever has two posts or supports which engage the dog 35, and detent to. lift the dog and detent out of engagement with the` teeth ofthe segmental rack and toothed disk, respectively, and as the rack stated, partially rotate the saidv disk; Vhen the machine is running at its normal speed, the lever 27. will be allowed to assume its normal position and the dog 35, will, under the influence of the leverlS, move over the tooth of the segmental rack and advance the said rack step by step. The movement of the rack will be communicated tothe disk and the camv 31, will be carried out of engage-- ment with the anti-friction roller 32, thus of the weight 19, to move toward the edge of the frame and permit the grinding wheel. to become operative. The toothed disk will be held in the position just described vby i means-of the detentand the machine will continue to runwith the grinding wheel in operative relation to the worksupport, so

normal.

I claim-v 1. In a saw grinding machine, a frame, a

rest for the saw, agrinding wheel operating in conjunction with the ,work rest, a shaft for the grinding wheel, a table on which the shaft is mounted, -means for reciprocating the table in opposite directions, a lever for reciprocating the shaft of the vgrinding wheel, a pitman for oscillating the lever, means whereby the shaft for the saw communicates motion to the pitman, a governor,

and means whereby the governor. operates to control the-position of the table.

2. In a sawgrinding machine, a ,shaft to which a saw is clamped,a grinding wheel, a shaft for rotating the grinding wheel, means for reciprocating said last named shaft, means for communicating motion of the shaft carrying the saw to the said reciprocatino means, a movable support for the 4. In a saw grinding machine, a shaft. to

which a saw is clamped, a grinding wheel, a shaft for rotating the grinding wheel, means for reciprocating -said last named shaft, means for communicating motion of t-he shaft `carrying the saw to the said reciproeat.

ing means, a movable support for the shaft ot the grinding` wheel, a governor, a thrust rod for actuating the support, a disk having a cam for moving the thrust rod, a governor,

5. In a saw grinding'machine. a frame, a shaft on which a saw is mounted, a grinding wheel, m'eans for rotating 4the saw, means for rotating the grinding wheel, means Jfor communicating the motion of said shaft to reciprocate the grinding wheel, to move it toward and away from the saw, and means or controlling the position of the grinding wheel with relation to the Speed of the saw. In witness whereof, I have hereunto aiiixed my signature in the presence of two witnesses.

EDGAR H. STERLING.

Witnesses: v J .mms F. Moons, SAMUEL ALsor.

-and means whereby the governor controls vthe dlsk. 

